Air quality index [µg/m3]:
excellent ≤ 12
good ≤ 36
lightly polluted ≤ 60
moderately polluted ≤ 84
heavily polluted ≤ 120
severely polluted > 120
PM 2.5
[µg/m3]
PM 10
HOUR OPOLSKA ST. ROOF (BEFORE FILTERS)  AIR SUPPLIED TO OFFICES
220057lightly pollutedgood141excellent
210055lightly pollutedexcellent121excellent
200049lightly pollutedexcellent111excellent
190045lightly pollutedexcellent101excellent
180044lightly pollutedexcellent91excellent
170046lightly pollutedexcellent111excellent
160054lightly pollutedgood131excellent
150047lightly pollutedexcellent111excellent
140047lightly pollutedexcellent121excellent
130057lightly pollutedgood131excellent
120046lightly pollutedexcellent121excellent
110050lightly pollutedexcellent101excellent
100042lightly pollutedexcellent71excellent
090038lightly pollutedexcellent71excellent
080043lightly pollutedexcellent71excellent
070052lightly pollutedexcellent91excellent
060043lightly pollutedexcellent61excellent
050039lightly pollutedexcellent71excellent
040035goodexcellent61excellent
030028goodexcellent51excellent
020027goodexcellent41excellent
010025goodexcellent41excellent
000023goodexcellent41excellent
230020goodexcellent31excellent